Burbach Michael

SEC source: 0000899140-25-000789 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,237.529

Underlying: Common Stock · 20.222 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2025 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026, March 31, 2027 and March 31, 2028.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2025 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026, March 31, 2027 and March 31, 2028.

SEC source: 0000899140-25-000789 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,750.995

Underlying: Common Stock · 51.974 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026 and March 31, 2027.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026 and March 31, 2027.

SEC source: 0000899140-25-000789 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,116.411

Underlying: Common Stock · 37.201 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 18, 2025. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2026.

SEC source: 0000899140-24-001378 · form4.xml · derivative · entry 4

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,782.967

Underlying: Common Stock · 3,300 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F6 · derivative.exercise_date: On December 19, 2024, the Reporting Person was granted 3,300 restricted stock units, of which 1,100 will vest on the first anniversary of the grant date, 1,100 will vest on the second anniversary of the grant date and 1,100 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: On December 19, 2024, the Reporting Person was granted 3,300 restricted stock units, of which 1,100 will vest on the first anniversary of the grant date, 1,100 will vest on the second anniversary of the grant date and 1,100 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-24-001378 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,482.967

Underlying: Common Stock · 79.618 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

SEC source: 0000899140-24-001378 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,095.13

Underlying: Common Stock · 75.978 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

SEC source: 0000899140-24-001378 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,131.729

Underlying: Common Stock · 38.779 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

SEC source: 0000950170-24-108773 · ownership.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,403.349

Underlying: Common Stock · 76.795 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F6 · shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

F6 · derivative.underlying_shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F6 · balance_after: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

SEC source: 0000950170-24-108773 · ownership.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,019.152

Underlying: Common Stock · 73.284 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F6 · shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

F6 · derivative.underlying_shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F6 · balance_after: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

SEC source: 0000950170-24-108773 · ownership.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,092.95

Underlying: Common Stock · 37.404 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F6 · shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of September 19, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

F6 · derivative.underlying_shares: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

F6 · balance_after: The number of dividend equivalent rights reported on this Form 4 have been shown to the third decimal place. This reflects a change in the reporting methodology.

SEC source: 0000950170-24-076753 · ownership.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,326.5549

Underlying: Common Stock · 76.5549 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2024 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025, March 31, 2026 and March 31, 2027.

SEC source: 0000950170-24-076753 · ownership.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,945.8684

Underlying: Common Stock · 73.0542 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025 and March 31, 2026.

SEC source: 0000950170-24-076753 · ownership.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,055.5455

Underlying: Common Stock · 37.2868 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of June 20, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2025.

SEC source: 0001628783-24-000001 · primary_doc.xml · nonDerivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 226,263.1404

F1 · price: These shares were bought in multiple transactions at the price of $23.525. The reporting person undertakes to provide Ryerson Holding Corporation, any security holder of Ryerson Holding Corporation or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares bought.

SEC source: 0000899140-24-000417 · form4.xml · nonDerivative · entry 5

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 222,263.1404

F12 · shares: Represents shares that have been withheld by the Company to satisfy its income tax and withholding remittance obligations in connection with the net settlement of restricted stock units.

SEC source: 0000899140-24-000417 · form4.xml · derivative · entry 9

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,250

Underlying: Common Stock · 8,250 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F11 · derivative.exercise_date: On March 31, 2024, the reporting person was granted 8,250 restricted stock units, of which 2,750 will vest on the first anniversary of the grant date, 2,750 will vest on the second anniversary of the grant date and 2,750 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F11 · derivative.expiration_date: On March 31, 2024, the reporting person was granted 8,250 restricted stock units, of which 2,750 will vest on the first anniversary of the grant date, 2,750 will vest on the second anniversary of the grant date and 2,750 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-24-000417 · form4.xml · derivative · entry 8

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,872.8142

Underlying: Common Stock · 3,936.4071 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F9 · derivative.exercise_date: On March 31, 2023, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 3,850 will vest on the second anniversary of the grant date and 3,850 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F9 · derivative.expiration_date: On March 31, 2023, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date. Of the remaining unvested restricted stock units, 3,850 will vest on the second anniversary of the grant date and 3,850 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F10 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2023. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-24-000417 · form4.xml · derivative · entry 7

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,018.2587

Underlying: Common Stock · 4,018.2587 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F7 · derivative.exercise_date: On March 31, 2022, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date and 3,850 vested on the second anniversary of the grant date. All 3,850 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F7 · derivative.expiration_date: On March 31, 2022, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date and 3,850 vested on the second anniversary of the grant date. All 3,850 of the remaining unvested restricted stock units will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F8 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2022. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-24-000417 · form4.xml · derivative · entry 6

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,058.0155 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of the Company.

F4 · price: The restricted stock units reported as disposed herein were settled for shares of common stock of the Company.

F5 · derivative.exercise_date: On March 31, 2021, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date, 3,850 vested on the second anniversary of the grant date and 3,850 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.exercise_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2021. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F5 · derivative.expiration_date: On March 31, 2021, the reporting person was granted 11,550 restricted stock units, of which 3,850 vested on the first anniversary of the grant date, 3,850 vested on the second anniversary of the grant date and 3,850 vested on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

F6 · derivative.expiration_date: Settlement of dividend equivalent rights in connection with the vesting of underlying restricted stock units that were granted on March 31, 2021. The dividend equivalent rights accrued when and as the Company declared quarterly dividends and vested proportionately with the restricted stock unit to which they related. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates.

SEC source: 0000899140-24-000417 · form4.xml · nonDerivative · entry 4

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 235,337.1404

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: Represents shares received or that will be received in respect of performance-based restricted stock units granted on March 31, 2021. Each performance-based restricted stock unit became vested on March 31, 2024, which was the later of (i) the third anniversary of the grant date and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement. The compensation committee certified the achievement of the applicable performance objectives on March 31, 2024. Vested shares will be delivered to the reporting person not later than 60 days following the vesting date.

SEC source: 0000899140-24-000417 · form4.xml · nonDerivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,887.1404

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

SEC source: 0000899140-24-000417 · form4.xml · nonDerivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 207,950.7333

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

SEC source: 0000899140-24-000417 · form4.xml · nonDerivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203,932.4746

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Represents shares received upon the vesting of restricted stock units and shares received upon the vesting of dividend equivalent rights granted in connection with the quarterly dividends declared by Ryerson Holding Corporation (the "Company"). Dividend equivalent rights are subject to the same terms and conditions, including vesting, as the underlying restricted stock units.

SEC source: 0000899140-24-000363 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,809.2213

Underlying: Common Stock · 68.6751 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

SEC source: 0000899140-24-000363 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,036.5174

Underlying: Common Stock · 46.7356 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

SEC source: 0000899140-24-000363 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,058.0155

Underlying: Common Stock · 23.5989 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of March 21, 2024. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

SEC source: 0000899140-23-001164 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,740.5462

Underlying: Common Stock · 68.6802 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

SEC source: 0000899140-23-001164 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,989.7818

Underlying: Common Stock · 46.7386 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

SEC source: 0000899140-23-001164 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,034.4166

Underlying: Common Stock · 23.6005 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of December 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

SEC source: 0000899140-23-000958 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,671.866

Underlying: Common Stock · 69.0057 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

SEC source: 0000899140-23-000958 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,943.0432

Underlying: Common Stock · 46.9606 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

SEC source: 0000899140-23-000958 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,010.8161

Underlying: Common Stock · 23.7127 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of September 14, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

SEC source: 0000899140-23-000752 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,602.8603

Underlying: Common Stock · 52.8603 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2023 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024, March 31, 2025 and March 31, 2026.

SEC source: 0000899140-23-000752 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,896.0826

Underlying: Common Stock · 35.973 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024 and March 31, 2025.

SEC source: 0000899140-23-000752 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,987.1034

Underlying: Common Stock · 18.1645 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of June 15, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2024.

SEC source: 0000899140-23-000511 · form4.xml · derivative · entry 9

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,550

Underlying: Common Stock · 11,550 shares

Expires not disclosed

F3 · derivative.exercise_price: See Exhibit 99.1.

F11 · derivative.exercise_date: See Exhibit 99.1.

F11 · derivative.expiration_date: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · derivative · entry 8

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,860.1096

Underlying: Common Stock · 3,930.0548 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: See Exhibit 99.1.

F4 · price: See Exhibit 99.1.

F9 · derivative.exercise_date: See Exhibit 99.1.

F10 · derivative.exercise_date: See Exhibit 99.1.

F9 · derivative.expiration_date: See Exhibit 99.1.

F10 · derivative.expiration_date: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · derivative · entry 7

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,968.9389

Underlying: Common Stock · 3,968.9389 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: See Exhibit 99.1.

F4 · price: See Exhibit 99.1.

F7 · derivative.exercise_date: See Exhibit 99.1.

F8 · derivative.exercise_date: See Exhibit 99.1.

F7 · derivative.expiration_date: See Exhibit 99.1.

F8 · derivative.expiration_date: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · derivative · entry 6

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,834.9561 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: See Exhibit 99.1.

F4 · price: See Exhibit 99.1.

F5 · derivative.exercise_date: See Exhibit 99.1.

F6 · derivative.exercise_date: See Exhibit 99.1.

F5 · derivative.expiration_date: See Exhibit 99.1.

F6 · derivative.expiration_date: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · nonDerivative · entry 5

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,874.4591

F12 · shares: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · nonDerivative · entry 4

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 211,217.4591

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · price: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · nonDerivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,467.4591

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · nonDerivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,537.4043

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: See Exhibit 99.1.

SEC source: 0000899140-23-000511 · form4.xml · nonDerivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 186,568.4654

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: See Exhibit 99.1.

SEC source: 0001140361-23-012633 · form4.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,790.1644

Underlying: Common Stock · 57.8784 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023, March 31, 2024 and March 31, 2025.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023, March 31, 2024 and March 31, 2025.

SEC source: 0001140361-23-012633 · form4.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,937.8778

Underlying: Common Stock · 38.9674 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023 and March 31, 2024.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023 and March 31, 2024.

SEC source: 0001140361-23-012633 · form4.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,834.9561

Underlying: Common Stock · 13.917 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2020 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2020 and outstanding as of March 16, 2023. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023.

SEC source: 0001567619-22-021803 · doc1.xml · derivative · entry 3

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,732.286

Underlying: Common Stock · 64.0017 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F5 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023, March 31, 2024 and March 31, 2025.

F5 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2022 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023, March 31, 2024 and March 31, 2025.

SEC source: 0001567619-22-021803 · doc1.xml · derivative · entry 2

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,898.9104

Underlying: Common Stock · 43.0902 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F4 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023 and March 31, 2024.

F4 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2021 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023 and March 31, 2024.

SEC source: 0001567619-22-021803 · doc1.xml · derivative · entry 1

Burbach Michael · CIK 0001628783 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,821.0391

Underlying: Common Stock · 15.3891 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation (the "Company").

F2 · shares: Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate.

F3 · derivative.exercise_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2020 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023.

F3 · derivative.expiration_date: The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2020 and outstanding as of December 15, 2022. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2023.